Which macromolecules can serve as antigens?
a. proteins only
b. carbohydrates only
c. nucleic acids only
d. proteins and carbohydrates only
e. proteins, carbohydrates and nucleic acids
ANSWER: e
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A) diploid B) aneuploid C) polyploid D) triploid
What is the role of the spindle fibers during mitosis?
A) They help separate the chromosomes. B) They break down the nuclear membrane. C) They duplicate the DNA. D) They make the chromosomes visible.
In Gram staining, ethanol-acetone is used as a
A) decolorizing agent. B) counterstain. C) mordant. D) drying agent. E) primary stain.
Which of the following statements regarding ELISAs is TRUE?
A) They are not quantitative. B) They require large amounts of serum. C) The antibody label is a fluorescent molecule. D) They can be used to detect antibody or antigen. E) They involve the use of membrane filters.